Ship comprising a system for reducing the vibrations originating from the casing and method for building said ship

Ship, comprising:

• a hull;
• a plurality of decks arranged inside said hull;
• at least one casing delimiting a cavity extending vertically across said plurality of decks from at least one engine room to a funnel;
• at least one exhaust flue of fumes generated by one or more internal combustion engines placed in said at least one engine room, said at least one exhaust flue being installed inside said at least one casing and comprising a plurality of concentrated mass components with concentrated mass and a plurality of components with mass distributed in length;
• a plurality of structures suitable for supporting, inside the at least one casing, the plurality concentrated mass components and the plurality of components with mass distributed in length,
• wherein said support structures comprise:
• a plurality of main platforms, each of which defines a main support base inside said cavity and is connected to walls of the at least one casing at a ship deck by an interposition of main elastic suspensions;
• and
• a plurality of secondary platforms, each of which is supported directly or indirectly only by one of said plurality of main platforms and defines a secondary support base arranged at a different height with respect to the main support base defined by a corresponding main platform;
• wherein at least one of said plurality of concentrated mass components is positioned on each main platform,
• and wherein an assembly consisting of a main platform, a corresponding at least one concentrated mass component, one or more secondary platforms supported by said main platform, and one or more components with mass distributed in length connected to said main platform and said one or more secondary platforms constitutes a structurally independent module,
• and wherein the main elastic suspensions of each main platform are sized to cut a transmission from the structurally independent module to the at least one casing of frequency vibrations generated by said one or more internal combustion engines and transmitted inside the at least one casing by said at least one exhaust flue, to utilize a total mass of said structurally independent module.